Wire-carriage-release dog for pile-wire-controlling mechanism for looms



April3,1928. 1,665,147

W. E. SMITH WIRE CARRIAGE RELEASE DOG FOR PILE WIRE CONTROLLING MECHANISM FOR- LOOMS Filed May 2.2.. 1926 l 3 Sheets-Sheet l April 3, 1928.

w. E. SMITH WIRE CARRIAGE RELEASE DOG FOR PILE WIRE CONTROLLING MECHANISM FOR LOOMS Filed May 22. 1926 3 Sheets-Sheet 3 2o /fl 27 Z8 /5 25 i I 1\ r;/ I 1 23 v F (0) gay M (07 r April 3, 1928. N 1,665,147

7 w. E. SMITH WIRE CARRIAGE RELEASE DOG FOR FILE WIRE CONTROLLING MECHANISM FOR LOOMS Filed May 22. 1926 v 3 Sheets-Sheet 5 when the said carriage reaches its extreme Patented Apr. 3, 1928.

WILLIAM-E. SMITH, or MILLTOWN, NEW, meant;l gendsmainta n LESS RUG COMPANY, on NEW BRUNSWICK, NEW JERSEY, A conroimmonlor nnw JERSEY. a

V wInE-cARIiIAGE-RELEAsE noo ion miawniaaqani ti a non Leonie,

' Application filed ma 22,

- My invention relates to improvements in pile Wire controlling apparatus for looms, such as illustrated in myco-pending application for U. S. Letters Patent, filed January 27,1925, Serial No. 5,041, and more particularly to the release mechanism of the recip-' rocating pile wire controlling carriage thereof. p f In mechanism of i the character above noted, the carriage thereof is adapted to be reciprocated upon a rail, and thereby suc'-' cessively withdraw a pile wire from the fabric which has been woven on the loom, and reinsert the withdrawn pile wire intoi the open warp shed of the fabricbeing'woven. The withdrawing cycle of the reciprocation of the carriage is eflectedjby means of a chain and mechanism on thecarriage adaptf edito be engaged by a projection onth'e chain, thesaid mechanism being adapted to be released from engagement with the chain outward position. 7

Under ordinary'conditions, prior to'th'e conception of my invention, a fixed projection was employed and secured to therail,

and adapted to engage mechanism on the.

carriage to effect its release fromthe drivmg chaln. The carr age, during 1t s reclprocation, moves at a high rate of speed, and

, when released from thedriving'chain the momentum developed in its outward move ment causes the carriage to'strikethe fixed abutment with considerable force resulting in damage to the elements of thecarriage,

after a periodofcontinuous use, and therefore requires considerable attention in order that the mechanism may be maintainedin an operable condition. 1 '-.The principal objects ofmy invention are to provide mechanisms for releasing the car riage from the drive chain, for'dampening the momentum developed in the outward movement of the carriage, for finally arresting such movement stopping the carriage andpreventing' it from contacting the fixed abutment on the rail.

Details of my invention will be described more fully hereinafter,.reference being'had to the accompanying drawings, of which:

Figll is, a plan View of suflicient of the wire controlling mechanism to illustrate my lnvention; A

' Fig.2 is a sectional 'elevatigon'taken along the line 2*2' tr Fig. -1; aindshowingf the wire controlling carriage position ap-j V proaching the fixed releasing element. there? c rag an-111's the "fixed releasing ele j ent, Jsh'own' in full m -SM toj' a rail The wire controlling carriage'ii's provided'with a book 4' adapted to engage Referring to Figsfl, of th dfa'w V .1ng, t he wire controlling"fcarriagei inns; tratedat11,'having a body; portion 2*adapted the headfioi pile wire Gin the'gusualmam g ner, The rai113 is provided with"the,usual groove Ho'r the accommodationiiand to mit movement of the drivingchain :8 which is adapted tomove the carriage outward in i direction of the arrow {shown d F '24 Movement of the carriage in-the opposite di-.

rection "may"be efiectedji bylanyl suitable me aand as l strat 'di nig helwo pa r m drawings a chain are provided fai h purposefaridfis" adapted to engage. a latch' lOj-on the carriage,asfullydes cribed in the above ,mentioned ,co-pending' application, this mechanism forming no part of the pres: ent invention'y I The drive fchaing ri et d 31e,f oifa pair ve i al lp 'jeci lllOIlS Q15, 15f on the carriage 1. retaining r a .a i'i i bvid dgwaat me; 1 9 1 ad pted I engageid b 3751101111: d li '12 forming Part [of a 'di 'ifieii. l wn l3,

atv

lever lfii pinion- 1ft h b a 15, 1: 15 of the carriage 1, andfi'sj provided suitably sha ed endl8 .adapted toco-operate t 1 r y brmi dic ivi y 9 i he driving latch '13, as illustrated in CF igi 2, the retaining lever "16 being adapted to engage theydriv'e latch '13 andretainthesh0ulde i-12 thereofin foperative"engag mentf withthe 7 projection 11 0f the drive 'chain' 8. f 'i 'In' accordal'ice with the principles of in e t 't er n g,l v r ie has inte; F

suitably secured thereini grally formed therewith a release dog having a pin 21 projecting laterallytherefrom, I and adapted to receive one endpf a tension' spring 22, the opposite end of which issecured'in any suitable manner to the carriage 1, in'the present instance 1 an eye 23 The release dog'20 1s of an arcuate form,

and com rises a cam path 24 adapted to be engaged y a projectionion the rail 3*,"whi'ch in the persent instance, comprises a roller 25 rotatably mounted on a stud 26 which is adjustably mounted in a slot" formedin an arm 27 -pro ecting from an abutment element 28.

' The abutment element 28 comprises a body portion 29 suitably apertureto receive a pair I of retaining bolts 30. Each of the retaining bolts30 is providedl with arectangular head '31 adapt ed tolie within the; chain groove 7 of the rail 3,1and to engage the upper over-f hanging wall '32 offla groove 33 formed in eachoftheisiderwalls of the rail?) and in which the body portion'2fof the carriage slidesQ Each bolt is provided witha clamp nut" 34 by means of which the head 31 l of the bolt isdrawn tightly against'the projecti'ng surface32 of the rail, thereby clamping and rigidly securing the abutment ele ment 28 in a fixed position on theupper face of the, rail 3.

IniFigsJiand 5 of the, drawing, I have illustrated ainodified form of the invention wherein the retaining lever 16 is rigidly se cured to and intermediate the ends of a shaft 35 which is pivotally mounted in bear; ings '36 formed on the projections 15, 15, of

the carriage 1.

7 justably mounted in the outer end of this lever.

isa spring cup 39 having a threaded shank 40 adapted toa threaded aperture/11 in the arm 38, a lock nut 42 being prev ded'mse: cure the cup 30 in its adjusted position fixed springcu 43 is formedinthe upper face of one oft 1e projectionsj lff), and a compression spring 1 1'is adaptedito beimain tainedwithinand between the cups 39. and

5 43'." By adjustinglthecup SQ ithrespect to thelev'er 38 andthe cup 7 13, the amount of compression on and consequently the force exerted by the spring 44 may bevaried'.

r i As illustrated in Figs- 1, :2 and" 3ofthe drawing, the driving chain 8 moves the car;

riage '1' with the engaged wire6 outwardly in thedirection of thearrow shown in Fig. 2, and as the carriage approachestheend of its outward cycle of reciprocation thecurved end of the release dog 20iengages the roller the chain 8 causes the cam face 24of t e re- 25; 'Continued motion'of the 'carria any lease dog 20 to ride up on the roller 25 against the tension exerted by the splin 22.

' talining lever 16 to move out of the cavity 19 in the drivinglatcli l3,as illustrated in-full lines in Fig.

WVhen the end 8 of the lever -16i'sfree of the cavity 19, and resistance to the outward movement ofthecarriageis produced by the dog 20 engaging the roller 25, the shoulder 12 of thelever 13 is forced out of engagement with the projection 11 of the chain 8, the chain 8 being continuously driven. After the release of the shoulder 12 from engagement with the projection 11, the

carriage continues to move outward by virtueof its developed momentum, and in order'to prevent a sudden and hammer-like pounding of the carriage 1 against the fixed abutment 28 the cam face 21 of the dog2O is adapted to ride up upon the roller 25 thereby increasing the tension of the spring 22 and the subsequentresistance to the'movement of the carriage, which dampens the movement of the carriage,and which, under ordinary conditions,"is sufficient to cause the carriage to come to'a vcomplete stop before engaging the said fixed abutmeiit. I However, such engagement is effectively prevented in a manner illustratedby brok-cnlines on wherein the retaining lever, '16 is shown as being turned oniits pivot until the fiat side thereof engages the body portion 2 of the carriage 1, and the jcrook portion/of the dog 20 engages the roller 25, asill'ustrated in said figure.

As shown i V of the outward movement of the carriage is effected by co-operative engagement between the dog20fiandt'l1'e cam face 37 of the projection 27 against the counter-action of the spring 4 1. Y i

Figs. 4 and '5,'tl1e dampening 1 Havingdescribediin detail: two embodie ments of my invention, other modifications i thereof will obviously present themselves to 7 those familiar-with mechanical arts. Therefore, only such limitations shouldbefplaced upon the scope jo'f'my invention as are 'qref r by the prior -tf f; record I "Iclaim: 1 i H scribed by; the" appended claims or, dictated.

1. In a pile wire controlling.mechanism compr sing a ra1l,'a. wire controlling car-V riage adapted to be reoiprocated on said ra1l,a chain for moving the carriage 1n one direction, a driving latch plvotally mounted onthe carriage and adapted to engage the chain, and a a retaining level pivotally mounted on said: carriage and adapted to engage the driVinglat-ch, the combination of a release dog rigidlyattached to said retain,-

ing lever, a project on on the raihi'a cam path I foi 'medfon one of' said elements and adapted to be engaged by the other of said elements, and resilient means opposing the pivotal movement of said release dog for dampening the developed momentum of-the carriage.

2, In a pile Wire controlling mechanism comprising a rail, a wire controlling carriage adapted to be reciprocated on said rail, a chain for moving the carriage in one direction, a driving latch pivotally mounted on the carriage and adapted to engage the chain, and a retaining lever pivotally mounted on said carriage and adaptedto engage the driving latch, the combinationof a release dog rigidly attached to said retaining lever, a projection on the rail, a cam path'formed on one of said elements and adapted to be engaged by the other of said elements, and means for dampening the developed momentum of the carriage compri's ing a resilient element adapted to oppose'the pivotal movement of the release dog for in- 1 creasing the resistance ofiered to the movement of the carriage on the rail, after its release from the driving chain, in proportion to the extent of the relative movement-of the release dog on the said projection.

3. In a. pile wire controlling mechanism comprising a rail, a wire controllingcarriage adapted to be reciprocated on said rail, a chain for moving the carriage in one direction, a driving latch pivotal'ly mounted on the carriage and adapted to engage the chain, and a. retaining lever pivotally mounted on said carriage and adapted to engage the driving latch, the combination of a release dog rigidly attached to said retaining lever, a projection on the rail, a cam path formed on one of said elements and adapted to be engaged by the other of said elements, and meansfor dampening the developed momentum of the carriage comprlsing a spring extending between said release dog and said carriage.

4. In combination with pile wire controlling mechanism comprising a trail, a wire controlling carriage adapted to be reciprocated on said rail and a chain for moving the carriage in one direction;a driving latch pivotally mounted on said carriage for movement in aplane coincident With the engage said driving latch; a release dog formed integral with said retaining lever, a

projection on said rail; a cam face formed on said release dog adapted tobe engaged by said projection, and a tension spring having one end secured to the outer end of said release dog and its oppositeend secured to the said carriage for producing a dampening effect to counteract the developed momentum of said carriage.

5. In combination with'pile wire controlling mechanism comprising a ,rail,.a wire controlling carriage adapted to be reciprocated on said'rail and a chain formoving; I

the'carriage in one direction; a driving latch pivotally mounted on said carriage for move-' ment in a plane coincident with the plane of movement of said chain and adapted to engage said chain; a retaining lever pivoted in said carriage andmovable ina plane co 1nc1dent with the plane of movement of said drivlng latch and adapted to engage said driving latch; a release dog formed integral with said retaining lever, a projection on said rail; a cam face formed on said release dog adapted to be engaged by said" projection, and a tension spring having one end secured to the outer end of said release dog and its opposite end secured to the said carriage for producing a dampening effect to counteract the developed momentum of said carriage, said cam face being arranged in a manner with respect to said release dog and said projection as will'cause a progressively increasing tension to'be developed in said springas the carriage advancesrelative to said projection, for progressively increasing of said carriage.

WILLIAM E. SMITH. 

